On Thu, Nov 30, 2023 at 08:24:49PM +0800, Andy Yan wrote: > From: Andy Yan <andy.yan@xxxxxxxxxxxxxx> > > /sys/kernel/debug/dri/vop2/summary: dump vop display state > /sys/kernel/debug/dri/vop2/regs: dump whole vop registers > /sys/kernel/debug/dri/vop2/active_regs: only dump the registers of > activated modules > > Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx> > > --- > > Changes in v3: > - put regs dump info in vop2_data > > drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 268 +++++++++++++++++++ > drivers/gpu/drm/rockchip/rockchip_drm_vop2.h | 11 + > drivers/gpu/drm/rockchip/rockchip_vop2_reg.c | 191 +++++++++++++ > 3 files changed, 470 insertions(+) > > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c > index 6f17cc56501e..56a165c0b130 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c > @@ -27,6 +27,7 @@ > #include <drm/drm_debugfs.h> > #include <drm/drm_flip_work.h> > #include <drm/drm_framebuffer.h> > +#include <drm/drm_gem_framebuffer_helper.h> > #include <drm/drm_probe_helper.h> > #include <drm/drm_vblank.h> > > @@ -187,6 +188,7 @@ struct vop2 { > */ > u32 registered_num_wins; > > + struct resource *res; > void __iomem *regs; > struct regmap *map; > > @@ -238,6 +240,37 @@ struct vop2 { > > #define vop2_output_if_is_dpi(x) ((x) == ROCKCHIP_VOP2_EP_RGB0) > > + > +/* > + * bus-format types. > + */ > +struct drm_bus_format_enum_list { > + int type; > + const char *name; > +}; > + > +static const struct drm_bus_format_enum_list drm_bus_format_enum_list[] = { > + { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, > + { MEDIA_BUS_FMT_RGB565_1X16, "RGB565_1X16" }, > + { MEDIA_BUS_FMT_RGB666_1X18, "RGB666_1X18" }, > + { MEDIA_BUS_FMT_RGB666_1X24_CPADHI, "RGB666_1X24_CPADHI" }, > + { MEDIA_BUS_FMT_RGB666_1X7X3_SPWG, "RGB666_1X7X3_SPWG" }, > + { MEDIA_BUS_FMT_YUV8_1X24, "YUV8_1X24" }, > + { MEDIA_BUS_FMT_UYYVYY8_0_5X24, "UYYVYY8_0_5X24" }, > + { MEDIA_BUS_FMT_YUV10_1X30, "YUV10_1X30" }, > + { MEDIA_BUS_FMT_UYYVYY10_0_5X30, "UYYVYY10_0_5X30" }, > + { MEDIA_BUS_FMT_RGB888_3X8, "RGB888_3X8" }, > + { MEDIA_BUS_FMT_RGB888_1X24, "RGB888_1X24" }, > + { MEDIA_BUS_FMT_RGB888_1X7X4_SPWG, "RGB888_1X7X4_SPWG" }, > + { MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA, "RGB888_1X7X4_JEIDA" }, > + { MEDIA_BUS_FMT_UYVY8_2X8, "UYVY8_2X8" }, > + { MEDIA_BUS_FMT_YUYV8_1X16, "YUYV8_1X16" }, > + { MEDIA_BUS_FMT_UYVY8_1X16, "UYVY8_1X16" }, > + { MEDIA_BUS_FMT_RGB101010_1X30, "RGB101010_1X30" }, > + { MEDIA_BUS_FMT_YUYV10_1X20, "YUYV10_1X20" }, > +}; > +static DRM_ENUM_NAME_FN(drm_get_bus_format_name, drm_bus_format_enum_list) > + > static const struct regmap_config vop2_regmap_config; > > static struct vop2_video_port *to_vop2_video_port(struct drm_crtc *crtc) > @@ -2522,6 +2555,239 @@ static const struct drm_crtc_helper_funcs vop2_crtc_helper_funcs = { > .atomic_disable = vop2_crtc_atomic_disable, > }; > > +static void vop2_dump_connector_on_crtc(struct drm_crtc *crtc, struct seq_file *s) > +{ > + struct drm_connector_list_iter conn_iter; > + struct drm_connector *connector; > + > + drm_connector_list_iter_begin(crtc->dev, &conn_iter); > + drm_for_each_connector_iter(connector, &conn_iter) { > + if (crtc->state->connector_mask & drm_connector_mask(connector)) > + seq_printf(s, " Connector: %s\n", connector->name); > + > + } > + drm_connector_list_iter_end(&conn_iter); > +} > + > +static int vop2_plane_state_dump(struct seq_file *s, struct drm_plane *plane) > +{ > + struct vop2_win *win = to_vop2_win(plane); > + struct drm_plane_state *pstate = plane->state; > + struct drm_rect *src, *dst; > + struct drm_framebuffer *fb; > + struct drm_gem_object *obj; > + struct rockchip_gem_object *rk_obj; > + bool xmirror; > + bool ymirror; > + bool rotate_270; > + bool rotate_90; > + dma_addr_t fb_addr; > + int i; > + > + seq_printf(s, " %s: %s\n", win->data->name, pstate->crtc ? "ACTIVE" : "DISABLED"); > + if (!pstate || !pstate->fb) > + return 0; 'pstate' is dereferenced before its checked being non NULL. Either the check is unnecessary or should be before the seq_printf() call. > + > + fb = pstate->fb; > + src = &pstate->src; > + dst = &pstate->dst; > + xmirror = pstate->rotation & DRM_MODE_REFLECT_X ? true : false; > + ymirror = pstate->rotation & DRM_MODE_REFLECT_Y ? true : false; > + rotate_270 = pstate->rotation & DRM_MODE_ROTATE_270; > + rotate_90 = pstate->rotation & DRM_MODE_ROTATE_90; > + > + seq_printf(s, "\twin_id: %d\n", win->win_id); > + > + seq_printf(s, "\tformat: %p4cc%s glb_alpha[0x%x]\n", > + &fb->format->format, > + drm_is_afbc(fb->modifier) ? "[AFBC]" : "", > + pstate->alpha >> 8); > + seq_printf(s, "\trotate: xmirror: %d ymirror: %d rotate_90: %d rotate_270: %d\n", > + xmirror, ymirror, rotate_90, rotate_270); > + seq_printf(s, "\tzpos: %d\n", pstate->normalized_zpos); > + seq_printf(s, "\tsrc: pos[%d, %d] rect[%d x %d]\n", src->x1 >> 16, > + src->y1 >> 16, drm_rect_width(src) >> 16, > + drm_rect_height(src) >> 16); > + seq_printf(s, "\tdst: pos[%d, %d] rect[%d x %d]\n", dst->x1, dst->y1, > + drm_rect_width(dst), drm_rect_height(dst)); > + > + for (i = 0; i < fb->format->num_planes; i++) { > + obj = fb->obj[0]; > + rk_obj = to_rockchip_obj(obj); > + fb_addr = rk_obj->dma_addr + fb->offsets[0]; Did you really intend to use array index [0] here or should this rather be [i]? If you intended to use [0] then you could move the initialization out of the loop. > + > + seq_printf(s, "\tbuf[%d]: addr: %pad pitch: %d offset: %d\n", > + i, &fb_addr, fb->pitches[i], fb->offsets[i]); > + } > + > + return 0; > +} > + > +static int vop2_crtc_state_dump(struct drm_crtc *crtc, struct seq_file *s) > +{ > + struct vop2_video_port *vp = to_vop2_video_port(crtc); > + struct drm_crtc_state *cstate = crtc->state; > + struct rockchip_crtc_state *vcstate; > + struct drm_display_mode *mode; > + struct drm_plane *plane; > + bool interlaced; > + > + seq_printf(s, "Video Port%d: %s\n", vp->id, !cstate ? > + "DISABLED" : cstate->active ? "ACTIVE" : "DISABLED"); > + > + if (!cstate || !cstate->active) > + return 0; > + > + mode = &crtc->state->adjusted_mode; > + vcstate = to_rockchip_crtc_state(cstate); > + interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); > + > + vop2_dump_connector_on_crtc(crtc, s); > + seq_printf(s, "\tbus_format[%x]: %s\n", vcstate->bus_format, > + drm_get_bus_format_name(vcstate->bus_format)); > + seq_printf(s, "\toutput_mode[%x]", vcstate->output_mode); > + seq_printf(s, " color_space[%d]\n", vcstate->color_space); > + seq_printf(s, " Display mode: %dx%d%s%d\n", > + mode->hdisplay, mode->vdisplay, interlaced ? "i" : "p", > + drm_mode_vrefresh(mode)); > + seq_printf(s, "\tclk[%d] real_clk[%d] type[%x] flag[%x]\n", > + mode->clock, mode->crtc_clock, mode->type, mode->flags); > + seq_printf(s, "\tH: %d %d %d %d\n", mode->hdisplay, mode->hsync_start, > + mode->hsync_end, mode->htotal); > + seq_printf(s, "\tV: %d %d %d %d\n", mode->vdisplay, mode->vsync_start, > + mode->vsync_end, mode->vtotal); > + > + drm_atomic_crtc_for_each_plane(plane, crtc) { > + vop2_plane_state_dump(s, plane); > + } > + > + return 0; > +} > + > +static int vop2_summary_show(struct seq_file *s, void *data) > +{ > + struct drm_info_node *node = s->private; > + struct drm_minor *minor = node->minor; > + struct drm_device *drm_dev = minor->dev; > + struct drm_crtc *crtc; > + > + drm_modeset_lock_all(drm_dev); > + drm_for_each_crtc(crtc, drm_dev) { > + vop2_crtc_state_dump(crtc, s); > + } > + drm_modeset_unlock_all(drm_dev); > + > + return 0; > +} > + > +static void vop2_regs_print(struct vop2 *vop2, struct seq_file *s, > + const struct vop2_regs_dump *dump, bool active_only) > +{ > + resource_size_t start; > + const int reg_num = 0x110 / 4; You added the number of registers to struct vop2_regs_dump, no need to hardcode this anymore. > + u32 val; > + int i; > + > + if (dump->en_mask && active_only) { > + val = vop2_readl(vop2, dump->base + dump->en_reg); > + if ((val & dump->en_mask) != dump->en_val) > + return; > + } > + seq_printf(s, "\n%s:\n", dump->name); > + > + start = vop2->res->start + dump->base; > + for (i = 0; i < reg_num;) { > + seq_printf(s, "%08x: %08x %08x %08x %08x\n", (u32)start + i * 4, > + vop2_readl(vop2, dump->base + (4 * i)), > + vop2_readl(vop2, dump->base + (4 * (i + 1))), > + vop2_readl(vop2, dump->base + (4 * (i + 2))), > + vop2_readl(vop2, dump->base + (4 * (i + 3)))); > + i += 4; > + } > +} > + > +static int vop2_regs_show(struct seq_file *s, void *arg) > +{ > + struct drm_info_node *node = s->private; > + struct vop2 *vop2 = (struct vop2 *)node->info_ent->data; node->info_ent->data is a void pointer, no need to cast explicitly. > + struct drm_minor *minor = node->minor; > + struct drm_device *drm_dev = minor->dev; > + const struct vop2_regs_dump *dump; > + unsigned int n = vop2->data->regs_dump_size; 'n' is used only once, it might be clearer just to use the value where needed and drop the extra variable. > + unsigned int i; > + > + drm_modeset_lock_all(drm_dev); > + > + if (vop2->enable_count) { > + for (i = 0; i < n; i++) { > + dump = &vop2->data->regs_dump[i]; > + vop2_regs_print(vop2, s, dump, false); > + } > + } else { > + seq_printf(s, "VOP disabled:\n"); There's nothing following after the ':', right? Then this should be "VOP: disabled\n" or without the colon at all. > + } > + drm_modeset_unlock_all(drm_dev); This code is repeated in vop2_active_regs_show() below. Maybe factor this out to a common function? > + > + return 0; > +} > + > +static int vop2_active_regs_show(struct seq_file *s, void *data) > +{ > + struct drm_info_node *node = s->private; > + struct vop2 *vop2 = (struct vop2 *)node->info_ent->data; > + struct drm_minor *minor = node->minor; > + struct drm_device *drm_dev = minor->dev; > + const struct vop2_regs_dump *dump; > + unsigned int n = vop2->data->regs_dump_size; > + unsigned int i; > + > + drm_modeset_lock_all(drm_dev); > + if (vop2->enable_count) { > + for (i = 0; i < n; i++) { > + dump = &vop2->data->regs_dump[i]; > + vop2_regs_print(vop2, s, dump, true); > + } > + } else { > + seq_printf(s, "VOP disabled:\n"); > + } > + drm_modeset_unlock_all(drm_dev); > + > + return 0; > +} > + Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |